Abstract

Bionomics of a gall midge that emerged from nodulelike structures of herbaceous sage, Artemisia ludoviciana Nutt., was studied as a part of a larger investigation on possible nitrogen fixation by this plant. Infested plants collected from the field were regularly examined in the laboratory where some of them were grown in a liquid nutrient medium. In the laboratory, adult midges were reared from the pupae and induction of infestation was attempted. Apparent nodulation on these plants is caused by the subterranean bud galls of a previously unknown gall midge species, Rhopalomyia subhumilis Gagne. The life history of this midge is reported. This midge has one generation per year in the study areas and overwinters as larvae. There were no indications of paedogenesis. These midge larvae are parasitised by a species of Platygasteridae.

Degree

College and Department

Life Sciences; Plant and Wildlife Sciences

Rights

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